Definitions

immature

[im-uh-choor, -toor, -tyoor, -chur] / ˈɪm əˈtʃʊər, -ˈtʊər, -ˈtyʊər, -ˈtʃɜr /

ADJECTIVE

young, inexperienced

Synonyms

STRONGEST

childish premature

STRONG

green unfledged unripe

WEAK

adolescent baby babyish callow crude half-grown imperfect infantile infantine jejune juvenile kid kidstuff puerile raw sophomoric tender tenderfoot underdeveloped undergrown undeveloped unfinished unformed unseasonable unseasoned unsophisticated untimely wet behind ears youthful

Antonyms

STRONGEST

mature

WEAK

adult developed experienced grown old

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Sure, some immature viewers might have glommed onto the edgy comedy of yesteryear.

From Salon • Jun. 11, 2026

Dr Ernesto Maceira, a specialist who treated the Spaniard's foot, said the condition was caused by "abnormal forces that act on an immature bone" and attributed it to Nadal's intense training as a child.

From BBC • May 29, 2026

Large language models are an immature technology, and engineering improvements for specialized data centers should be expected—but how big they are and when they come is unknowable in advance.

From The Wall Street Journal • May 17, 2026

Bernstein urged the Boston Symphony to name the 24-year-old Tilson Thomas its principal conductor but the musicians resisted, , believing he was too immature.

From Los Angeles Times • Apr. 23, 2026

I found the views and the behavior of the PAC immature.

From "Long Walk to Freedom" by Nelson Mandela

Vocabulary lists containing immature

List 5

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Brown Girl Dreaming

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Made You Look: Synonyms for "Immature"

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